Samsung is rolling out the latest Jelly Bean update with build number I9300XXUGNA8 for the international variant of Galaxy S3 (GT-I9300), starting with Uzbekistan. As the firmware is being rolled out in phases, it may take some time before it is available in your country or region.

Those who missed the Over-The-Air (OTA) update notification and those who cannot wait for its official release in their country can follow our step-by-step guide to install the same manually.

Android 4.3 I9300XXUGNA8 Firmware Details

Version: Android 4.3
Date: 2014 January

Update Galaxy S3 to Android 4.3 I9300XXUGNA8 Jelly Bean Official Firmware [GUIDE]

NOTE: As this is an unbranded firmware, it includes no extra apps or language packs and can be installed on any unlocked Galaxy S3 GT-I9300, regardless of the country or region.

IBTimes UK reminds its readers that it will not be held liable for any damage to device during or after firmware installation. Users are advised to proceed at their own risk.


1. Install necessary USB Drivers for Galaxy S3 GT-I9300 on the computer.

2. USB Debugging Mode should be enabled on the phone by navigating to Settings >> Developer Options.

3. Back up your important data to avoid potential data loss during firmware installation.

4. Ensure the phone is factory unlocked (not locked to any specific carrier).

5. Verify Galaxy S3 has at least 80 percent battery charge.

6. The I9300XXUGNA8 Android 4.3 firmware is compatible with Galaxy S3 GT-I9300 only. Do not attempt installing it on incorrect variants as it may brick the device. Verify the model number of the Galaxy S3 by navigating to Settings >> About Phone.

Downloads Required

Steps to Update Galaxy S3 with Android 4.3 I9300XXUGNA8 Jelly Bean Official Firmware

Step 1: Extract Android 4.3 I9300XXUGNA8 firmware zip file via WinRAR/7-Zip or WinZip to obtain a .tar.md5 file and some other optional files.
Step 2: Next Odin zip file should be extracted to get Odin3 v3.07.exe along with few other files.
Step 3: Power off the Galaxy S3 and boot the device into Download Mode. To do so, press and hold Volume Down, Home and Power buttons together until a construction Android robot icon with a warning triangle appears on screen. Then keep tapping Power button to progress into Download Mode.
Step 5: Launch Odin on computer as an Administrator.
Step 6: Now connect Galaxy S3 to computer with USB cable in Download Mode. When Odin detects the device and a pop-up message reading "Added!" appears on screen, the ID: COM box will turn yellow with the COM port number.
Note: If the Added message fails to appear, then try re-installing USB drivers or changing the port on computer.

Step 7: Select the following files in Odin from extracted I9300XXUGNA8 firmware folder:

  • Tap PDA button and choose the .tar.md5 file.
  • Hit Phone button and select the file named MODEM.
  • Tap CSC button and choose the file named CSC.
  • Click PIT button and choose the .pit file.

NOTE: Ignore the last three files (MODEM, CSC and .pit) if they are not found.

Step 8: In Odin, select Auto Reboot and F. Reset Time options. But, the Re-Partition option must be checked only if you used the .pit file in previous step.
Step 9: After ensuring that Step 7 and Step 8 are done correctly, hit the Start button in Odin to begin installing the firmware.
Step 10: After the firmware is installed, a PASS message with green background appears in the left-most box at the top of Odin. Galaxy S3 will then reboot to the Home screen. It is now safe to disconnect the USB cable and remove the phone from computer.

Galaxy S3 GT-I9300 is now running I9300XXUGNA8 Android 4.3 Jelly Bean firmware. Head over to Settings >> About Phone to verify the firmware installed on the device.

Troubleshooting: If Galaxy S3 I9300 is stuck at boot animation after Step 10 then boot into recovery mode (press and hold the Volume Up, Home and Power buttons together), and perform Wipe data/Factory Reset and Wipe Cache Partition task before choosing Reboot System Now option.

Note: In recovery mode use Volume keys to navigate between options and Power key to select the option. Please note that performing data wipe task will erase your device's internal memory and not external SD card data.

[Source: Team Android]